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Synthesis of aptamer II–Ru@MOF-based ECL-RET acceptor. (A) Synthesis of aptamer II–Ru@MOF signal probe. (B) Fabrication of g-C3N4 NS. (C) Dual-wavelength ratiometric ECL sensor. (D) Proposed detection mechanism. Adapted with permission from ref (58). Copyright 2019 American Chemical Society.
